The target becomes unable to divulge secrets without paying a terrible price. You may name one secret for every four levels that you possess; the target cannot reveal these secrets without suffering great pain.

If the target willingly or unwillingly divulges the secret(s) named, they take 10 hp damage per caster level unless they make a successful Fortitude saving throw. In this case, the target only takes 4d4 hp damage +1 point per caster level.